Siemens simatic s7-400 FM 450-1, User Manual, Page: 48 / 130

Program
6.5 Technical specifications of the blocks
Counter module FM 450-1
48
Manual, 02/2014, A5E03648739-02
Call
The FC CNT_CTRL can be called once per counter either cyclically or in a time-controlled
program. Calling in the interrupt program is not permissible.
Calling the FC CNT_CTRL in the STL and LAD representations is rendered below.
Figure 6-1 Calling the FC CNt_CTRL
Parameters of the FC CNT_CTRL
Name Declaration type Data type Meaning The user... The block...
DB_NO INPUT BLOCK_DB Number of the data block
with the counter data
enters this queries this
SW_GATE INPUT BOOL "SW gate (start/stop)"
counter control bit
sets and resets
this
queries this
GATE_STP INPUT BOOL "Stop gate" counter control
bit
sets and resets
this
queries this
OT_ERR_A INPUT BOOL Acknowledge operator error sets and resets
this
queries this
OT_ERR OUTPUT BOOL Operator error occurred queries this sets and resets
this
L_DIRECT IN-OUT BOOL Trigger bit for "direct
loading" of a counter
sets queries and
resets this
L_PREPAR IN-OUT BOOL Trigger bit for "preparatory
loading" of a counter
sets queries and
resets this
T_CMP_V1 IN-OUT BOOL Transfer trigger bit for
"comparison value 1"
sets queries and
resets this
T_CMP_V2 IN-OUT BOOL Transfer trigger bit for
"comparison value 2"
sets queries and
resets this